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<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>变量赋值</title>
  <script type="text/javascript">
    var num1 = 10;
    var num2 = "JS"
    document.write("num1的值是:" + num1);
    document.write("num2的值是:" + num2);
  </script>
</head>

<body>

</html>